In 1988 at the age of 37, Frieda moved to the United States (New York) for 12 years and collaborated with Gail Federici to create different hair products for blondes and brunettes and the Frizz Ease products.

John was married to the Scottish singer Lulu, with whom he had a son, the actor Jordan Frieda (1977). He now lives with Frances Avery Agnelli née Howe (1965), an Anglo-American architect and the widow of Fiat heir, Giovanni Alberto Agnelli (son of the Italian entrepreneur and politician, Umberto Agnelli). Frances has a daughter from her marriage to Giovanni, Virginia Asia Agnelli. John and Frances together have a daughter, Leyla Luna (2005), and a son, Jackson John (2007). In 2010, John donated £50,000 to the Conservative Party.[4]